Investigation of Transport Mechanism Through Charge-Active Regions in Sm 0.5Ca 0.5MnO 3

23 Pages Posted: 4 Jan 2022

See all articles by Matiullah Shah

Matiullah Shah

University of Wah (UOW) - Department of Physics

Muhammad Idrees

COMSATS University

Muhammad Nadeem

PINSTECH

Uzma Ghazanfar

University of Wah (UOW) - Department of Physics

Muhammad Atif

University of Illinois at Urbana-Champaign - Department of Physics

Fakhr e. Alam

University of Wah (UOW) - Department of Physics

Asadullah Dawood

Nazarbayev University

M. Sultan Irshad

Hubei University

Muhammad Mudassir Abbasi

affiliation not provided to SSRN

Abstract

Polycrystalline system of Sm0.5Ca0.5MnO3 has been synthesized through standard solid state reactions method. Phase purity and structural analysis have been investigated by refinement of XRD pattern using FullProf code that displayed perovskite orthorhombic structure of space group Pbnm. A low fields magnetic study reveals two prominent peaks, one at TCO~ 270 K and other at TC ~110 K. A broad investigation on conduction phenomena has been made by employing impedance spectroscopy in frequency range 1-10 MHz and temperature ranging 78 K - 300 K. A careful study has been carried out of the system for hopping process of charge carriers through charge active regions of grain and grains boundaries with temperature and frequency degree of freedom. Contrary to the typical investigation of Arrhenius behavior, the conduction of the system has been analyzed using Small Polaron Hopping (SPH) and Variable Range Hopping (VRH) models. This effort may present a detail and systematic addition to understanding the charge transport in divalent doped rare earth manganites.

Keywords: Manganite, Impedance Spectroscopy, Conduction mechanism, Magnetic Study

Suggested Citation

Shah, Matiullah and Idrees, Muhammad and Nadeem, Muhammad and Ghazanfar, Uzma and Atif, Muhammad and Alam, Fakhr e. and Dawood, Asadullah and Irshad, M. Sultan and Abbasi, Muhammad Mudassir, Investigation of Transport Mechanism Through Charge-Active Regions in Sm 0.5Ca 0.5MnO 3. Available at SSRN: https://ssrn.com/abstract=4000513 or http://dx.doi.org/10.2139/ssrn.4000513

Matiullah Shah (Contact Author)

University of Wah (UOW) - Department of Physics ( email )

Pakistan

Muhammad Idrees

COMSATS University ( email )

Muhammad Nadeem

PINSTECH ( email )

Uzma Ghazanfar

University of Wah (UOW) - Department of Physics ( email )

Muhammad Atif

University of Illinois at Urbana-Champaign - Department of Physics ( email )

1110 West Green Street
Urbana, IL 61801-3080
United States

Fakhr e. Alam

University of Wah (UOW) - Department of Physics ( email )

Asadullah Dawood

Nazarbayev University ( email )

M. Sultan Irshad

Hubei University ( email )

Muhammad Mudassir Abbasi

affiliation not provided to SSRN ( email )

No Address Available

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